CN103152131A - TFCI (Transport Format Combination Indicator) coding, mapping and transmitting-receiving method in TD-SCDMA (Time Division-Synchronous Code Division Multiple Access) system - Google Patents
TFCI (Transport Format Combination Indicator) coding, mapping and transmitting-receiving method in TD-SCDMA (Time Division-Synchronous Code Division Multiple Access) system Download PDFInfo
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Abstract
The invention discloses a TFCI (Transport Format Combination Indicator) coding, mapping and transmitting-receiving method in a TD-SCDMA (Time Division-Synchronous Code Division Multiple Access) system. By adopting the method, the resource wastage is reduced and the TFCI transmission efficiency is improved. The technical scheme is that a mapping method comprises the step of mapping a coded TFCI word of an original TFCI bit with bit number of 1 to first to fourth parts of a TFCI domain according to a mapping rule.
Description
Technical field
The present invention relates to a kind of code processing method of 3G communication system, relate in particular in a kind of TD-SCDMA system and improve TFCI(Transport Format Combination Indicator, the transformat combination indication) code processing method of transmission performance.
Background technology
Process along with global economic integration and social informatization, mobile communication business and mobile communication subscriber are the trend of rapid growth, mobile communication is individualized, intelligent in order to adapt to, the demand of multimedization, has proposed 3-G (Generation Three mobile communication system) (being called for short " 3G ").TD-SCDMA is one of 3 main standard of existing 3G system, is the international communication standard that is proposed by first Chinese.The 3G system that has independent intellectual property right as China, TD-SCDMA is a kind of employing TDD(time division duplex) the public land mobile communication system of pattern and intelligent antenna technology, also unique employing SCDMA(synchronization CDMA) and LCR(hang down spreading rate) the 3G system of technology, adopted series of new techniques.Along with the development of the communication technology and the user raising day by day to quality of service requirement, the 3G standard of initial version can not satisfy user's needs, therefore constantly evolution forward, such as HSDPA(High Speed Downlink Packet Access, high speed downlink packet access technology) be exactly a kind of enhanced scheme that 3GPPRelease5 proposes, main purpose is the high speed support to Packet data service, and obtain lower time delay, higher throughput of system and stronger QoS(Quality of Service, service quality) guarantee; And be exactly at the corresponding High Speed Data Transfer Protocol of up direction at the HSUPA (High Speed Uplink Packet Access, High Speed Uplink Packet access) that Release6 proposes.
In the TD-SCDMA system, physical channel adopts four-layer structure: system-frame, radio frames (Radio Frame), subframe (Subframe) and time slot (Timeslot)/code.Time slot is used for distinguishing the different user signal on time domain and yard territory, and it has TDMA(Time Division Multiple Access, time division multiple access) characteristic.Fig. 1 has provided the signal format of the physical channel of TD-SCDMA.
The length of a radio frames is 10ms, is divided into two 5ms subframes, and the structure of 2 subframes in every 10ms frame length is identical.Physical channel is a Burst Channel, the particular time-slot emission in the radio frames that is assigned to.The distribution of radio frames can be continuous, and namely the time slot of each frame can be distributed to physical channel, can be also discontinuous distribution, part time slot allocation in radio frames is namely only arranged to physical channel.A burst is comprised of data division, training sequence (being the midamble code) part and a protection time slot; at MBMS(Multimedia Broadcast Multicast Service, multimedia broadcast multi-broadcasting business) the next burst of special carrier situation only is comprised of training sequence (being the preamble code) and data division.The duration of a burst is exactly a time slot; comprise two data blocks, one long be training sequence code block and a protection interval of 144 chips; the data field length of burst is 352 chips; corresponding symbolic number is relevant with spreading factor; the length at protection interval is 16 chips, and the structure of burst as shown in Figure 2.
In the TD-SCDMA system, transformat combination indication TFCI can send at the uplink and downlink time slot.To each user, TFCI information will send once in every 10ms radio frames.TFCI symbol after coding is in two subframes and be equally distributed in data block.TFCI symbol after coding or send in adjacent training sequence code territory is perhaps at SS(Synchronisation Shift, simultaneous bias) and TPC(Transmit Power Control, transmission power control) send after symbol.If do not have TPC and SS information to transmit, TFCI just directly distributes 5ms subframe in frame interior training sequence code territory adjacent with institute.Figure 3 shows that the position, TFCI territory when not having TPC and SS, if Fig. 4 has shown the position in the TFCI territory when transmitting control signal SS and TPC.
The above is the TFCI transmission in the conventional time slot of TD-SCDMA, and the TFCI in MBMS business time-slot and special time slot sends similarly, specifically can be with reference to 3GPP TS25 Series correlation agreement.
In the TD-SCDMA system, different according to the length of TFCI, have three kinds of different encoding schemes alternative, be applied to respectively the TFCI that grows, shorter TFCI and extremely short TFCI.When TFCI adopted respectively QPSK modulation and 8PSK modulation, three kinds of different encoding schemes simply were described below, specifically can be referring to 3GPP TS25.222 agreement.：
When A.TFCI adopts the QPSK modulation
(1) long TFCI coding (6～10 bit)
(32,10) subcode with second order Reed-Muller code is encoded to TFCI, obtains 32 emission bit N=32.If TFCI less than 10 bits need to expand to 10 long code words with it by mending 0 in the high position of this code word.The code word of (32,10) subcode of second order Reed-Muller code is the linear combination of the partial sequence of 10 basic sequences.
(2) shorter TFCI coding (3～5 bit)
If the TFCI bit number is between 3 to 5, TFCI obtains 16 emission bit N=16 with (16,5) bi-orthogonal codes coding.If TFCI less than 5 bits need to expand to 5 long code words with it by mending 0 in its highest order.The code word of (16,5) bi-orthogonal codes is the linear combination of 5 basic sequences defining in agreement.
(3) extremely short TFCI(1～2 bits)
If the bit number of TFCI is 1 or 2, need to use repeating transmission when encoding.In this case, each bit is repeated 4 times, if only have 1 TFCI bit, obtains 4 emission bit N=4), if 2 TFCI bits are arranged, obtain 8 emission bits (N=8).
Bit number in the TFCI word is designated as N, and the bit in code word is designated as b
k, k=0 wherein ..., N-1.Bit number N in the TFCI word is 8,16, and 32 o'clock, the TFCI word to the mapping of TFCI bit position as shown in Figure 5; When the bit number in TFCI is 4, the TFCI word is divided into two parts, distribute to two continuous subframes, and be mapped to the afterbody of first data area of each continuous subframes, the second portion and the 4th part that are TFCI are not used, first and third part have only been used, as shown in Figure 6; Fig. 3 and Fig. 4 are seen in the position of TFCI the first to the 4th part in time slot.
When B.TFCI adopts the 8PSK modulation
If the business of emission 2Mbps, TFCI will adopt the modulation of 8PSK.
(1) long TFCI coding (6～10 bit)
(64,10) subcode with second order Reed-Muller code is encoded to TFCI, and 16 bits that are perforated, and finally obtains 48 emission bit N=48.If TFCI less than 10 bits need to expand to 10 long code words with it by mending 0 in the high position of this code word.The code word of (64,10) subcode of second order Reed-Muller code is the linear combination of the partial sequence of 10 basic sequences.
(2) shorter TFCI coding (3～5 bit)
If the TFCI bit number is between 3 to 5, TFCI encodes with (32,5) single order Reed-Muller code, and 8 bits that are perforated, and finally obtains 24 emission bit N=24.If TFCI less than 5 bits need to expand to 5 long code words with it by mending 0 in its highest order.The code word of (32,5) single order Reed-Muller code is the linear combination of 5 basic sequences defining in agreement.
(3) extremely short TFCI(1～2 bits)
If the bit number of TFCI is 1 or 2, need to use repeating transmission when encoding.In this case, each bit is repeated 6 times, if only have 1 TFCI bit, obtains 6 emission bit N=6), if 2 TFCI bits are arranged, obtain 12 emission bits (N=12).
Bit number in the TFCI word is designated as N, and the bit in code word is designated as b
k, k=0 wherein ..., N-1.Bit number N in the TFCI word is 12,24, and 48 o'clock, the TFCI word to the mapping of TFCI bit position as shown in Figure 7; When the bit number in TFCI is 6, the TFCI word is divided into two parts, distribute to two continuous subframes, and be mapped to the afterbody of first data area of each continuous subframes, the second portion and the 4th part that are TFCI are not used, first and third part have only been used, as shown in Figure 8; Fig. 3 and Fig. 4 are seen in the position of TFCI the first to the 4th part in time slot.
As mentioned above, according to existing TD-SCDMA agreement, no matter which kind of modulation system TFCI adopts, before TFCI encodes, if the bit number of TFCI is some value (as 3,4,6,7,8,9 etc.), need with 0 bit number with TFCI be complemented into 5 or 10(hereinafter referred to as " supplying bit "), these supply the bit of bit and original TFCI, and it doesn't matter, just for the ease of coding, cause the wasting of resources, reduced the efficiency of transmission of TFCI, and receiving terminal can not utilize the transmission performance of supplying bit raising TFCI; If these supply bit is not to be fixed as 0, but be arranged to have with original TFCI the bit information of certain relation, can utilize this relation to improve transmission performance when receiving.In addition, when TFCI was 1 bit, the TFCI word that forms later on through repeated encoding was divided into two parts, be mapped to first and the third part in the TFCI territory of two continuous subframes, and the second portion in the TFCI territory of these two subframes and the 4th part are idle, do not use, and cause the wasting of resources; If TFCI word that can repeated encoding is later is mapped to first to the 4th part in the TFCI territory of two subframes, not only can avoids the wasting of resources, and be conducive to improve the transmission performance of TFCI.In sum, how effectively to utilize the above-mentioned bit of supplying, and when TFCI is 1 bit, how to utilize second portion and the 4th part in the TFCI territory of two continuous subframes, improving the transmission performance of TFCI, avoid the wasting of resources, is the problem that the present invention need to solve.
Summary of the invention
The object of the invention is to address the above problem, the mapping method in a kind of TD-SCDMA system transmissions format combination indication bit cataloged procedure is provided.
Another object of the present invention is to provide a kind of sending method of TD-SCDMA system transmissions format combination indication bit.
Another purpose of the present invention has been to provide a kind of method of reseptance of TD-SCDMA system transmissions format combination indication bit.
Another purpose of the present invention has been to provide a kind of method of sending and receiving of TD-SCDMA system transmissions format combination indication bit.
Technical scheme of the present invention is:
The present invention has disclosed the mapping method in a kind of TD-SCDMA system transmissions format combination indication bit cataloged procedure, is that the transformat combination directive after 1 transformat combination indication bit encoded is mapped to first to the 4th part in transformat combination indication territory by a mapping ruler with original bit number.
An embodiment according to the mapping method in TD-SCDMA system transmissions format combination indication bit cataloged procedure of the present invention, mapping ruler is that the transformat combination directive that will be mapped to first is mapped to second portion simultaneously, and the transformat combination directive that is mapped to third part is mapped to the 4th part simultaneously.
An embodiment according to the mapping method in TD-SCDMA system transmissions format combination indication bit cataloged procedure of the present invention, mapping ruler is that the transformat combination directive that will be mapped to first is mapped to the 4th part simultaneously, and the transformat combination directive that is mapped to third part is mapped to second portion simultaneously.
According to an embodiment of the mapping method in TD-SCDMA system transmissions format combination indication bit cataloged procedure of the present invention, original bit number is that the cataloged procedure of 1 transformat combination indication bit comprises:
To carry out the operation of predictive encoding with several original transformat combination indication bit, with the information bit after the predictive encoding operation as transformat combination indication coding before the bit of supplying of insertion be inserted into relevant position in original transformat combination indication bit.
The present invention has disclosed again a kind of sending method of TD-SCDMA system transmissions format combination directive, and sending method comprises:
Completing the coding of transformat combination indication bit processes;
Whether the bit number that judges original transformat combination indication equals 1, if bit number equals 1 transformat combination directive after encoding according to mapping ruler is mapped to first's to the four parts in transformat combination indication territory, and send after completing mapping, if bit number is not equal to 1 transformat combination directive after encoding is mapped to first and the third part in transformat combination indication territory, and sends after completing mapping.
An embodiment according to the sending method of TD-SCDMA system transmissions format combination directive of the present invention, mapping ruler is that the transformat combination directive that will be mapped to first is mapped to second portion simultaneously, and the transformat combination directive that is mapped to third part is mapped to the 4th part simultaneously.
An embodiment according to the sending method of TD-SCDMA system transmissions format combination directive of the present invention, mapping ruler is that the transformat combination directive that will be mapped to first is mapped to the 4th part simultaneously, and the transformat combination directive that is mapped to third part is mapped to second portion simultaneously.
The present invention has disclosed again a kind of method of reseptance of TD-SCDMA system transmissions format combination directive, and method of reseptance comprises:
Indicate first of territory to go mapping to process to tetrameric transformat combination directive with completing transformat combination;
Whether the bit number that judges original transformat combination indication bit is 1, if bit number is 1, according to mapping ruler, transformat combination is indicated the soft bit information of corresponding transformat combination directive in first to the 4th part in territory to merge, then obtain original transformat combination indication bit through decoding, if bit number is not 1 directly obtains original transformat combination indication bit through decoding after going to shine upon processing.
An embodiment according to the method for reseptance of TD-SCDMA system transmissions format combination directive of the present invention, mapping ruler is that the transformat combination directive that will be mapped to first is mapped to second portion simultaneously, and the transformat combination directive that is mapped to third part is mapped to the 4th part simultaneously.
An embodiment according to the method for reseptance of TD-SCDMA system transmissions format combination directive of the present invention, mapping ruler is that the transformat combination directive that will be mapped to first is mapped to the 4th part simultaneously, and the transformat combination directive that is mapped to third part is mapped to second portion simultaneously.
The present invention has also disclosed a kind of method of sending and receiving of TD-SCDMA system transmissions format combination directive, and the method comprises:
Process of transmitting:
Completing the coding of transformat combination indication bit processes;
Whether the bit number that judges original transformat combination indication equals 1, if bit number equals 1 transformat combination directive after encoding according to mapping ruler is mapped to first's to the four parts in transformat combination indication territory, and send after completing mapping, if bit number is not equal to 1 transformat combination directive after encoding is mapped to first and the third part in transformat combination indication territory, and sends after completing mapping;
Receiving course:
Indicate first of territory to go mapping to process to tetrameric transformat combination directive with completing transformat combination;
Whether the bit number that judges original transformat combination indication bit is 1, if bit number is 1, according to mapping ruler, transformat combination is indicated the soft bit information of corresponding transformat combination directive in first to the 4th part in territory to merge, then obtain original transformat combination indication bit through decoding, if bit number is not 1 directly obtains original transformat combination indication bit through decoding after going to shine upon processing.
An embodiment according to the method for sending and receiving of TD-SCDMA system transmissions format combination directive of the present invention, mapping ruler is that the transformat combination directive that will be mapped to first is mapped to second portion simultaneously, and the transformat combination directive that is mapped to third part is mapped to the 4th part simultaneously.
An embodiment according to the method for sending and receiving of TD-SCDMA system transmissions format combination directive of the present invention, mapping ruler is that the transformat combination directive that will be mapped to first is mapped to the 4th part simultaneously, and the transformat combination directive that is mapped to third part is mapped to second portion simultaneously.
The present invention contrasts prior art, and following beneficial effect is arranged: technical scheme of the present invention is utilized the bit of supplying of the front insertion of the TD-SCDMA TFCI of system coding, improves resource utilization and the spectrum efficiency of system; After encoding when original TFCI bit number equals 1 simultaneously, the TFCI word is mapped to whole first to the 4th parts in TFCI territory, improves system gain at receiving terminal by merging soft bit information, improves transmission performance, and has realized the compatibility with existing system.
Description of drawings
Fig. 1 is TD-SCDMA system physical channel signal form schematic diagram.
Fig. 2 is the burst structure schematic diagram of TD-SCDMA system.
Fig. 3 does not have the position view of TFCI information in business time-slot in the situation of TPC and SS.
Fig. 4 has the position view of TFCI information in business time-slot in the situation of TPC and SS.
Fig. 5 is N=8 in the TD-SCDMA system, and the bit of 16,32 o'clock TFCI words is at the mapping schematic diagram of each position of TFCI.
Fig. 6 be in the TD-SCDMA system during N=4 bit of TFCI word at the mapping schematic diagram of each position of TFCI.
Fig. 7 is N=12 in the TD-SCDMA system, and the bit of 24,48 o'clock TFCI words is at the mapping schematic diagram of each position of TFCI.
Fig. 8 be in the TD-SCDMA system during N=6 bit of TFCI word at the mapping schematic diagram of each position of TFCI.
The sending method exemplary plot that Fig. 9 supplies bit when being TFCI coding of the present invention.
The method of reseptance exemplary plot that Figure 10 supplies bit when being TFCI coding of the present invention.
Figure 11 is N=12 in TD-SCDMA of the present invention system, and the bit of 24,48 o'clock TFCI words is at the mapping schematic diagram of each position of TFCI.
Figure 12 be in TD-SCDMA of the present invention system during N=6 the bit of TFCI word at the mapping schematic diagram of each position of TFCI.
Figure 13 is the sending method exemplary plot that original TFCI bit number of the present invention equals 1 o'clock TFCI word bit.
Figure 14 is the method for reseptance exemplary plot that original TFCI bit number of the present invention equals 1 o'clock TFCI word bit.
Embodiment
The invention will be further described below in conjunction with drawings and Examples.
Core concept of the present invention is in order to take into account on compatible basis, be shown the information bit than peculiar certain relation with several original TFCI by the table of bits of supplying that will insert before the TD-SCDMA TFCI of system coding, improve resource utilization and the spectrum efficiency of system.Simultaneously when original TFCI bit number equals 1 after coding the TFCI word no longer only be mapped to first and the third part in the TFCI territory of continuous two subframes, but be mapped to whole first to the 4th parts in TFCI territory, and improve system gain at receiving terminal by merging soft bit information, improve transmission performance.
The embodiment of the coding method of TD-SCDMA system transmissions format combination indication
Need to insert before the TD-SCDMA TFCI of system coding and supply bit, prior art is only that all bits of supplying are fixed as 0, but has changed in the present embodiment this way.In the present embodiment, at first several bits in original transformat combination indication (TFCI) bit are carried out a predictive encoding operation.This predictive encoding operation institute for object can be front several bits of original TFCI bit, several bits of being scheduled to of several bits or communication protocol afterwards.This predictive encoding operation is arranged by communication protocol, the combination in any that has comprised following mode: (1) part is supplied the repeated encoding that bit is above-mentioned several original TFCI bits, for example supplies front Y the bit (wherein Y is the quantity of supplying bit) that bit is set to original TFCI bit; (2) part is supplied the cyclic redundancy check (CRC) code that bit is above-mentioned several original TFCI bits; (3) part is supplied the parity check code that bit is above-mentioned several original TFCI bits.
Then these are needed the bit of supplying that inserts through the information bit after predictive encodings operations before as the TFCI coding, be inserted into the relevant position in original TFCI bit.
The embodiment of the sending method of TD-SCDMA system transmissions format combination indication
On the basis of the coding method of previous embodiment, the present embodiment shows the example of corresponding sending method.See also Fig. 9, the concrete steps of the TD-SCDMA TFCI of the system sending method of the present embodiment are as follows.
Step S900: obtain original TFCI bit from high level, forward step S901 to.
Step S901: judge whether to insert in original TFCI bit and supply bit, if need to would forward step S902 to, if do not need forward step S903 to.
Step S902: according to communication protocol, several bits in original TFCI bit are carried out a predictive encoding operation, several bits in original TFCI bit are carried out a predictive encoding operation, to need through the information bit after predictive encoding operation the bit of supplying that inserts before as the TFCI coding, be inserted into the relevant position in original TFCI bit, forward step S903 to.
This predictive encoding operation institute for object can be front several bits of original TFCI bit, several bits of being scheduled to of several bits or communication protocol afterwards.This predictive encoding operation is arranged by communication protocol, the combination in any that has comprised following mode: (1) part is supplied the repeated encoding that bit is above-mentioned several original TFCI bits, for example supplies front Y the bit (wherein Y is the quantity of supplying bit) that bit is set to original TFCI bit; (2) part is supplied the cyclic redundancy check (CRC) code that bit is above-mentioned several original TFCI bits; (3) part is supplied the parity check code that bit is above-mentioned several original TFCI bits.
Step S903: complete sending after the TFCI coding is processed.
The embodiment of the method for reseptance of TD-SCDMA system transmissions format combination indication
On the basis of the coding method of aforementioned two embodiment and sending method, the present embodiment shows the example of corresponding method of reseptance.See also Figure 10, the concrete steps of the TD-SCDMA TFCI of the system method of reseptance of the present embodiment are as follows.
Step S1000: complete the TFCI decoding and process, forward step S1001 to.
Step S1001: judged whether to supply bit, if supply bit, forwarded step S1002 to, if do not supply bit, forwarded step S1003 to.
Step S1002: will supply bit and take out, and process according to the relation of supplying bit and corresponding original TFCI bit in predictive encoding operation in process of transmitting, and recover original TFCI bit, and then forward step S1003 to.
In fact this step is equivalent to the contrary processing procedure of the predictive encoding operation in the sending method of last embodiment.
Step S1003: carry out subsequent treatment according to the TFCI that obtains.The process of subsequent treatment belongs to those of ordinary skills' processing means commonly used, does not repeat them here.
The embodiment of the method for sending and receiving of TD-SCDMA system transmissions format combination indication
In conjunction with aforementioned two respectively about the embodiment of process of transmitting and receiving course, the present embodiment shows the example of method of sending and receiving.See also Fig. 9 and Figure 10, the below is the detailed description to the method for the present embodiment.
The method of the present embodiment is divided into two processes: process of transmitting shown in Figure 9 and receiving course shown in Figure 10.
For process of transmitting, its step is as follows:
Step S900: obtain original TFCI bit from high level, forward step S901 to.
Step S901: judge whether to insert in original TFCI bit and supply bit, if need to would forward step S902 to, if do not need forward step S903 to.
Step S902: according to communication protocol, several bits in original TFCI bit are carried out a predictive encoding operation, several bits in original TFCI bit are carried out a predictive encoding operation, to need through the information bit after predictive encoding operation the bit of supplying that inserts before as the TFCI coding, be inserted into the relevant position in original TFCI bit, forward step S903 to.
This predictive encoding operation institute for object can be front several bits of original TFCI bit, several bits of being scheduled to of several bits or communication protocol afterwards.This predictive encoding operation is arranged by communication protocol, the combination in any that has comprised following mode: (1) part is supplied the repeated encoding that bit is above-mentioned several original TFCI bits, for example supplies front Y the bit (wherein Y is the quantity of supplying bit) that bit is set to original TFCI bit; (2) part is supplied the cyclic redundancy check (CRC) code that bit is above-mentioned several original TFCI bits; (3) part is supplied the parity check code that bit is above-mentioned several original TFCI bits.
Step S903: complete sending after the TFCI coding is processed.
For receiving course, its step is as follows:
Step S1000: complete the TFCI decoding and process, forward step S1001 to.
Step S1001: judged whether to supply bit, if supply bit, forwarded step S1002 to, if do not supply bit, forwarded step S1003 to.
Step S1002: will supply bit and take out, and process according to the relation of supplying bit and corresponding original TFCI bit in predictive encoding operation in process of transmitting, and recover original TFCI bit, and then forward step S1003 to.
In fact this step is equivalent to the contrary processing procedure of the predictive encoding operation in the sending method of last embodiment.
Step S1003: carry out subsequent treatment according to the TFCI that obtains.The process of subsequent treatment belongs to those of ordinary skills' processing means commonly used, does not repeat them here.
The enforcement of the mapping method in TD-SCDMA system transmissions format combination indication bit cataloged procedure
Example
The application of the method for the present embodiment is the original TFCI word that in the TD-SCDMA TFCI of system cataloged procedure, bit number equals 1.In the prior art, the TFCI word after coding just is mapped to first and the third part in TFCI territory.In the present embodiment, the TFCI word after coding is mapped to whole firsts to the four parts in TFCI territory by a mapping ruler.This mapping ruler is by the concrete agreement of communication protocol.
This mapping ruler by the communication protocol agreement is that traditional TFCI word that is mapped to first and third part also is mapped to second portion and the 4th part simultaneously.For example: the TFCI word that is mapped to first also is mapped to second portion, and the TFCI word that is mapped to third part also is mapped to the 4th part; The TFCI word that perhaps is mapped to first also is mapped to the 4th part, and the TFCI word that is mapped to third part also is mapped to second portion etc.
In the present embodiment, adopt following method to shine upon: the TFCI word that will be mapped to first also is mapped to second portion, and the TFCI word that is mapped to third part also is mapped to the 4th part.Figure 11 and Figure 12 are respectively the schematic diagrames of the present embodiment when adopting QPSK modulation and 8PSK modulation.
In the present embodiment, the coding of indication can be the encoding operation of indication in aforesaid embodiment, that is: will carry out the operation of predictive encoding with several original transformat combination indication bit, with the information bit after the predictive encoding operation as transformat combination indication coding before the bit of supplying of insertion be inserted into relevant position in original transformat combination indication bit.The concrete operations of coding are described in detail in the aforementioned embodiment, do not repeat them here.
The embodiment of the sending method of TD-SCDMA system transmissions format combination indication bit directive
Based on the mapping method in the TFCI cataloged procedure of last embodiment, the present embodiment shows the transmission processing method that the original TFCI bit number of TD-SCDMA system equals TFCI word bit in 1 o'clock TFCI word mapping process.See also Figure 13, the sending method of the present embodiment specifically comprises the following steps.
Step S1300: complete the TFCI coding and process, forward step S1301 to.
The processing of the TFCI of indication coding can be the encoding operation of indication in aforesaid embodiment herein.
Step S1301: judge whether original TFCI bit number is 1, if bit number be 1 forward step S1302 to, if bit number is not 1 forwards step S1303 to.
Step S1302: according to agreement, the TFCI word after encoding according to mapping ruler is mapped to first's to the four parts in TFCI indication territory, then forwards step S1303 to.
Here the mapping ruler of indication by the communication protocol agreement, refers to traditional TFCI word that is mapped to first and third part also is mapped to second portion and the 4th part simultaneously.For example: the TFCI word that is mapped to first also is mapped to second portion, and the TFCI word that is mapped to third part also is mapped to the 4th part; The TFCI word that perhaps is mapped to first also is mapped to the 4th part, and the TFCI word that is mapped to third part also is mapped to second portion etc.
Step S1303: complete the mapping of TFCI word and process, enter subsequent processes.If this step by step S1301 place directly circulation come (being that original TFCI bit number is not the dirty step S1303 place of forwarding to of 0 situation), TFCI word mapping processing described herein refers to traditional mapping processing procedure.
The embodiment of the method for reseptance of TD-SCDMA system transmissions format combination indication bit directive
Based on the sending method of the mapping method in the TFCI cataloged procedure of previous embodiment and TFCI directive, the present embodiment shows the receiving handling method that the original TFCI bit number of TD-SCDMA system equals TFCI word bit in 1 o'clock TFCI word mapping process.See also Figure 14, the method for reseptance of the present embodiment specifically comprises the following steps.
Step S1400: complete whole first of TFCI territory and go mapping to process to tetrameric TFCI word.Remove to shine upon the inverse process of processing the mapping processing that is previous embodiment.Then forward step S1401 to.
Step S1401: judge whether original TFCI bit number is 1, if bit number be 1 forward step S1402 to, if bit number is not 1 forwards step S1403 to.
Step S1402: according to agreement, merge according to the soft bit information of mapping ruler with corresponding TFCI word in first to the 4th part in TFCI territory, then carry out the TFCI coding, forward step S1403 to.TFCI coding herein can be the cataloged procedure described in previous embodiment.
The execution mode that merges is: also be mapped to second portion if the mapping ruler in sending method is the TFCI word that will be mapped to first, the TFCI word that is mapped to third part also is mapped to the 4th part, the merging in receiving course refers to first and the second portion soft bit information in TFCI territory are merged, and third part and the 4th part soft bit information merge.
Step S1403: obtain original TFCI bit, enter subsequent processes.
The reality of the method for sending and receiving of TD-SCDMA system transmissions format combination indication bit directive
Execute example
In conjunction with process of transmitting and the receiving course of the TFCI word of the first two embodiment, the present embodiment shows the embodiment of method of sending and receiving.Please be simultaneously referring to Figure 13 and Figure 14, the below is the concrete steps of the method for sending and receiving of the present embodiment.
The method of sending and receiving of the present embodiment comprises process of transmitting and receiving course two parts.Wherein, process of transmitting further comprises:
Step S1300: complete the TFCI coding and process, forward step S1301 to.
The processing of the TFCI of indication coding can be the encoding operation of indication in aforesaid embodiment herein.
Step S1301: judge whether original TFCI bit number is 1, if bit number be 1 forward step S1302 to, if bit number is not 1 forwards step S1303 to.
Step S1302: according to agreement, the TFCI word after encoding according to mapping ruler is mapped to first's to the four parts in TFCI indication territory, then forwards step S1303 to.
Here the mapping ruler of indication by the communication protocol agreement, refers to traditional TFCI word that is mapped to first and third part also is mapped to second portion and the 4th part simultaneously.For example: the TFCI word that is mapped to first also is mapped to second portion, and the TFCI word that is mapped to third part also is mapped to the 4th part; The TFCI word that perhaps is mapped to first also is mapped to the 4th part, and the TFCI word that is mapped to third part also is mapped to second portion etc.
In the present embodiment, be to get the TFCI word that will be mapped to first also to be mapped to second portion, the TFCI word that is mapped to third part also is mapped to tetrameric mapping ruler.
Step S1303: complete the mapping of TFCI word and process, enter subsequent processes.If this step by step S1301 place directly circulation come (being that original TFCI bit number is not the dirty step S1303 place of forwarding to of 0 situation), TFCI word mapping processing described herein refers to traditional mapping processing procedure.
Receiving course further comprises:
Step S1400: complete whole first of TFCI territory and go mapping to process to tetrameric TFCI word.Remove to shine upon the inverse process of processing the mapping processing that is previous embodiment.Then forward step S1401 to.
Step S1401: judge whether original TFCI bit number is 1, if bit number be 1 forward step S1402 to, if bit number is not 1 forwards step S1403 to.
Step S1402: according to agreement, merge according to the soft bit information of mapping ruler with corresponding TFCI word in first to the 4th part in TFCI territory, then carry out the TFCI coding, forward step S1403 to.TFCI coding herein can be the cataloged procedure described in previous embodiment.
The execution mode that merges is: based on the mapping ruler of fixing in process of transmitting, the merging in receiving course refers to first and the second portion soft bit information in TFCI territory are merged, and third part and the 4th part soft bit information merge.
Step S1403: obtain original TFCI bit, enter subsequent processes.
Above-described embodiment is to provide to those of ordinary skills and realizes or use of the present invention; those of ordinary skills can be in the situation that do not break away from invention thought of the present invention; above-described embodiment is made various modifications or variation; thereby protection scope of the present invention do not limit by above-described embodiment, and should be the maximum magnitude that meets the inventive features that claims mention.
Claims (13)
1. the mapping method in a TD-SCDMA system transmissions format combination indication bit cataloged procedure, it is characterized in that, be that the transformat combination directive after 1 transformat combination indication bit encoded is mapped to first to the 4th part in transformat combination indication territory by a mapping ruler with original bit number.
2. the mapping method in TD-SCDMA system transmissions format combination indication bit cataloged procedure according to claim 1, it is characterized in that, mapping ruler is that the transformat combination directive that will be mapped to first is mapped to second portion simultaneously, and the transformat combination directive that is mapped to third part is mapped to the 4th part simultaneously.
3. the mapping method in TD-SCDMA system transmissions format combination indication bit cataloged procedure according to claim 1, it is characterized in that, mapping ruler is that the transformat combination directive that will be mapped to first is mapped to the 4th part simultaneously, and the transformat combination directive that is mapped to third part is mapped to second portion simultaneously.
4. the mapping method in TD-SCDMA system transmissions format combination indication bit cataloged procedure according to claim 1, is characterized in that, original bit number is that the cataloged procedure of 1 transformat combination indication bit comprises:
To carry out the operation of predictive encoding with several original transformat combination indication bit, with the information bit after the predictive encoding operation as transformat combination indication coding before the bit of supplying of insertion be inserted into relevant position in original transformat combination indication bit.
5. the sending method of a TD-SCDMA system transmissions format combination directive, is characterized in that, sending method comprises:
Completing the coding of transformat combination indication bit processes;
Whether the bit number that judges original transformat combination indication equals 1, if bit number equals 1 transformat combination directive after encoding according to mapping ruler is mapped to first's to the four parts in transformat combination indication territory, and send after completing mapping, if bit number is not equal to 1 transformat combination directive after encoding is mapped to first and the third part in transformat combination indication territory, and sends after completing mapping.
6. the sending method of TD-SCDMA system transmissions format combination directive according to claim 5, it is characterized in that, mapping ruler is that the transformat combination directive that will be mapped to first is mapped to second portion simultaneously, and the transformat combination directive that is mapped to third part is mapped to the 4th part simultaneously.
7. the sending method of TD-SCDMA system transmissions format combination directive according to claim 5, it is characterized in that, mapping ruler is that the transformat combination directive that will be mapped to first is mapped to the 4th part simultaneously, and the transformat combination directive that is mapped to third part is mapped to second portion simultaneously.
8. the method for reseptance of a TD-SCDMA system transmissions format combination directive, is characterized in that, method of reseptance comprises:
Indicate first of territory to go mapping to process to tetrameric transformat combination directive with completing transformat combination;
Whether the bit number that judges original transformat combination indication bit is 1, if bit number is 1, according to mapping ruler, transformat combination is indicated the soft bit information of corresponding transformat combination directive in first to the 4th part in territory to merge, then obtain original transformat combination indication bit through decoding, if bit number is not 1 directly obtains original transformat combination indication bit through decoding after going to shine upon processing.
9. the method for reseptance of TD-SCDMA system transmissions format combination directive according to claim 8, it is characterized in that, mapping ruler is that the transformat combination directive that will be mapped to first is mapped to second portion simultaneously, and the transformat combination directive that is mapped to third part is mapped to the 4th part simultaneously.
10. the method for reseptance of TD-SCDMA system transmissions format combination directive according to claim 8, it is characterized in that, mapping ruler is that the transformat combination directive that will be mapped to first is mapped to the 4th part simultaneously, and the transformat combination directive that is mapped to third part is mapped to second portion simultaneously.
11. the method for sending and receiving of a TD-SCDMA system transmissions format combination directive is characterized in that, the method comprises:
Process of transmitting:
Completing the coding of transformat combination indication bit processes;
Whether the bit number that judges original transformat combination indication equals 1, if bit number equals 1 transformat combination directive after encoding according to mapping ruler is mapped to first's to the four parts in transformat combination indication territory, and send after completing mapping, if bit number is not equal to 1 transformat combination directive after encoding is mapped to first and the third part in transformat combination indication territory, and sends after completing mapping;
Receiving course:
Indicate first of territory to go mapping to process to tetrameric transformat combination directive with completing transformat combination;
Whether the bit number that judges original transformat combination indication bit is 1, if bit number is 1, according to mapping ruler, transformat combination is indicated the soft bit information of corresponding transformat combination directive in first to the 4th part in territory to merge, then obtain original transformat combination indication bit through decoding, if bit number is not 1 directly obtains original transformat combination indication bit through decoding after going to shine upon processing.
12. the method for sending and receiving of TD-SCDMA system transmissions format combination directive according to claim 11, it is characterized in that, mapping ruler is that the transformat combination directive that will be mapped to first is mapped to second portion simultaneously, and the transformat combination directive that is mapped to third part is mapped to the 4th part simultaneously.
13. the method for sending and receiving of TD-SCDMA system transmissions format combination directive according to claim 11, it is characterized in that, mapping ruler is that the transformat combination directive that will be mapped to first is mapped to the 4th part simultaneously, and the transformat combination directive that is mapped to third part is mapped to second portion simultaneously.
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| CN2013100512908A CN103152131A (en) | 2009-08-07 | 2009-08-07 | TFCI (Transport Format Combination Indicator) coding, mapping and transmitting-receiving method in TD-SCDMA (Time Division-Synchronous Code Division Multiple Access) system |
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| CN2013100512908A CN103152131A (en) | 2009-08-07 | 2009-08-07 | TFCI (Transport Format Combination Indicator) coding, mapping and transmitting-receiving method in TD-SCDMA (Time Division-Synchronous Code Division Multiple Access) system |
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| CN2009100560341A Division CN101990292A (en) | 2009-08-07 | 2009-08-07 | Method for coding, mapping, receiving and dispatching transport format combination indicator (TFCI) in time division-synchronization code division multiple access (TD-SCDMA) system |
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